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sched,nr: add comments and rename variables

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Signed-off-by: Carlo Galiotto <carlo@srs.io>
master
Carlo Galiotto 3 years ago committed by carlo-gal
parent 0f92869156
commit b359c7b728
2 changed files with 49 additions and 42 deletions
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7
lib/include/srsran/phy/phch/ra_nr.h
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@ -154,6 +154,9 @@ SRSRAN_API uint32_t srsran_ra_nr_type1_riv(uint32_t N_rb, uint32_t start_rb, uin
* @brief Returns the MCS corresponding to CQI
*
* Mapping is performed as: return the MCS that has the closest spectral efficiency to that of the CQI
*
* @remark Implements mapping based on TS 38.214, MCS Tables 5.1.3.1-1, 5.1.3.1-2, 5.1.3.1-3 and CQI Tables 5.2.2.1-2,
* Table 5.2.2.1-3, 5.2.2.1-4
* @param cqi CQI value
* @param cqi_table_idx CQI table index
* @param mcs_table MCS table parameter
@ -173,6 +176,8 @@ SRSRAN_API int srsran_ra_nr_cqi_to_mcs(uint8_t cqi,
* @brief Returns the Spectral Efficiency corresponding to CQI
*
* Mapping is performed as: return the MCS that has the closest spectral efficiency to that of the CQI
*
* @remark Implements mapping based on TS 38.214, CQI Tables 5.2.2.1-2, Table 5.2.2.1-3, 5.2.2.1-4
* @param cqi CQI value
* @param cqi_table_idx CQI table index
* @return The Spectral Efficiency
@ -183,6 +188,8 @@ SRSRAN_API double srsran_ra_nr_cqi_to_se(uint8_t cqi, srsran_csi_cqi_table_t cqi
* @brief Returns the MCS corresponding to Spectral Efficiency
*
* Mapping is performed as: return the greatest MCS with an SE lower than or equal to target SE
*
* @remark Implements mapping based on TS 38.214, MCS Tables 5.1.3.1-1, 5.1.3.1-2, 5.1.3.1-3
* @param se_target Target Spectral efficiency to be mapped into MCS
* @param mcs_table MCS table parameter
* @param dci_format DCI format

84
lib/src/phy/phch/ra_nr.c
Unescape Escape View File

@ -133,7 +133,7 @@ static const float ra_nr_beta_offset_csi_table[RA_NR_BETA_OFFSET_CSI_SIZE] = {
4.000f, 5.000f, 6.250f, 8.000f, 10.000f, 12.625f, 15.875f, 20.000f, NAN, NAN, NAN,
NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN, NAN};
typedef enum { ra_nr_table_1 = 0, ra_nr_table_2, ra_nr_table_3 } ra_nr_table_t;
typedef enum { ra_nr_table_idx_1 = 0, ra_nr_table_idx_2, ra_nr_table_idx_3 } ra_nr_table_idx_t;
/**
* The table below performs the mapping of the CQI into the closest MCS, based on the corresponding spectral efficiency.
@ -149,7 +149,7 @@ typedef enum { ra_nr_table_1 = 0, ra_nr_table_2, ra_nr_table_3 } ra_nr_table_t;
* MCS_table_idx: 1 -> Table 5.1.3.1-1; 2 -> Table 5.1.3.1-2; 3 -> Table 5.1.3.1-3
*/
static int ra_nr_cqi_to_mcs_table[3][3][RA_NR_CQI_TABLE_SIZE] = {
static const int ra_nr_cqi_to_mcs_table[3][3][RA_NR_CQI_TABLE_SIZE] = {
/* ROW 1 - CQI Table 1 */
{/* MCS Table 1 */ {-1, 0, 0, 2, 4, 6, 8, 11, 13, 15, 18, 20, 22, 24, 26, 28},
/* MCS Table 2 */ {-1, 0, 0, 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 17, 19, 21},
@ -165,7 +165,7 @@ static int ra_nr_cqi_to_mcs_table[3][3][RA_NR_CQI_TABLE_SIZE] = {
/**
* The CQI to Spectral efficiency table.
* The array ra_nr_cqi_to_se_table[CQI_table_idx][CQI] contains the Spectracl Efficiency corresponding to CQI, based on
* The array ra_nr_cqi_to_se_table[CQI_table_idx][CQI] contains the Spectral Efficiency corresponding to CQI, based on
* the given CQI_table_idx:
* CQI_table_idx: 1 -> Table 5.2.2.1-2; 2 -> Table 5.2.2.1-3, 3 -> Table 5.2.2.1-4
*/
@ -222,10 +222,10 @@ static const double ra_nr_cqi_to_se_table[3][RA_NR_CQI_TABLE_SIZE] = {
3.9023,
4.5234}};
static ra_nr_table_t ra_nr_select_table_pusch_noprecoding(srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type)
static ra_nr_table_idx_t ra_nr_select_table_pusch_noprecoding(srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type)
{
// Non-implemented parameters
bool mcs_c_rnti = false;
@ -235,7 +235,7 @@ static ra_nr_table_t ra_nr_select_table_pusch_noprecoding(srsran_mcs_table_t
// - CRC scrambled by C-RNTI or SP-CSI-RNTI,
if (mcs_table == srsran_mcs_table_256qam && dci_format == srsran_dci_format_nr_0_1 &&
(rnti_type == srsran_rnti_type_c || rnti_type == srsran_rnti_type_sp_csi)) {
return ra_nr_table_2;
return ra_nr_table_idx_2;
}
// - the UE is not configured with MCS-C-RNTI,
@ -245,14 +245,14 @@ static ra_nr_table_t ra_nr_select_table_pusch_noprecoding(srsran_mcs_table_t
if (!mcs_c_rnti && mcs_table == srsran_mcs_table_qam64LowSE && dci_format != srsran_dci_format_nr_rar &&
search_space_type == srsran_search_space_type_ue &&
(rnti_type == srsran_rnti_type_c || rnti_type == srsran_rnti_type_sp_csi)) {
return ra_nr_table_3;
return ra_nr_table_idx_3;
}
// - the UE is configured with MCS-C-RNTI, and
// - the PUSCH is scheduled by a PDCCH with
// - CRC scrambled by MCS-C-RNTI,
// if (mcs_c_rnti && dci_format != srsran_dci_format_nr_rar && rnti_type == srsran_rnti_type_mcs_c) {
// return ra_nr_table_3;
// return ra_nr_table_idx_3;
// }
// - mcs-Table in configuredGrantConfig is set to 'qam256',
@ -260,7 +260,7 @@ static ra_nr_table_t ra_nr_select_table_pusch_noprecoding(srsran_mcs_table_t
// - if PUSCH is transmitted with configured grant
// if (configured_grant_table == srsran_mcs_table_256qam &&
// (rnti_type == srsran_rnti_type_cs || dci_format == srsran_dci_format_nr_cg)) {
// return ra_nr_table_2;
// return ra_nr_table_idx_2;
// }
// - mcs-Table in configuredGrantConfig is set to 'qam64LowSE'
@ -268,23 +268,23 @@ static ra_nr_table_t ra_nr_select_table_pusch_noprecoding(srsran_mcs_table_t
// - if PUSCH is transmitted with configured grant,
// if (configured_grant_table == srsran_mcs_table_qam64LowSE &&
// (rnti_type == srsran_rnti_type_cs || dci_format == srsran_dci_format_nr_cg)) {
// return ra_nr_table_3;
// return ra_nr_table_idx_3;
// }
return ra_nr_table_1;
return ra_nr_table_idx_1;
}
static ra_nr_table_t ra_nr_select_table_pdsch(srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type)
static ra_nr_table_idx_t ra_nr_select_table_pdsch(srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type)
{
// - the higher layer parameter mcs-Table given by PDSCH-Config is set to 'qam256', and
// - the PDSCH is scheduled by a PDCCH with DCI format 1_1 with
// - CRC scrambled by C-RNTI
if (mcs_table == srsran_mcs_table_256qam && dci_format == srsran_dci_format_nr_1_1 &&
rnti_type == srsran_rnti_type_c) {
return ra_nr_table_2;
return ra_nr_table_idx_2;
}
// the UE is not configured with MCS-C-RNTI,
@ -293,7 +293,7 @@ static ra_nr_table_t ra_nr_select_table_pdsch(srsran_mcs_table_t mcs_tab
// CRC scrambled by C - RNTI
if (mcs_table == srsran_mcs_table_qam64LowSE && search_space_type == srsran_search_space_type_ue &&
rnti_type == srsran_rnti_type_c) {
return ra_nr_table_3;
return ra_nr_table_idx_3;
}
// - the UE is not configured with the higher layer parameter mcs-Table given by SPS-Config,
@ -302,7 +302,7 @@ static ra_nr_table_t ra_nr_select_table_pdsch(srsran_mcs_table_t mcs_tab
// - if the PDSCH is scheduled without corresponding PDCCH transmission using SPS-Config,
// if (!sps_config_mcs_table_present && mcs_table == srsran_mcs_table_256qam &&
// ((dci_format == srsran_dci_format_nr_1_1 && rnti_type == srsran_rnti_type_cs) || (!is_pdcch_sps))) {
// return ra_nr_table_2;
// return ra_nr_table_idx_2;
// }
// - the UE is configured with the higher layer parameter mcs-Table given by SPS-Config set to 'qam64LowSE'
@ -310,17 +310,17 @@ static ra_nr_table_t ra_nr_select_table_pdsch(srsran_mcs_table_t mcs_tab
// - if the PDSCH is scheduled without corresponding PDCCH transmission using SPS-Config,
// if (sps_config_mcs_table_present && sps_config_mcs_table == srsran_mcs_table_qam64LowSE &&
// (rnti_type == srsran_rnti_type_cs || is_pdcch_sps)) {
// return ra_nr_table_3;
// return ra_nr_table_idx_3;
// }
// else
return ra_nr_table_1;
return ra_nr_table_idx_1;
}
static ra_nr_table_t ra_nr_select_table(srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type)
static ra_nr_table_idx_t ra_nr_select_table(srsran_mcs_table_t mcs_table,
srsran_dci_format_nr_t dci_format,
srsran_search_space_type_t search_space_type,
srsran_rnti_type_t rnti_type)
{
// Check if it is a PUSCH transmission
if (dci_format == srsran_dci_format_nr_0_0 || dci_format == srsran_dci_format_nr_0_1 ||
@ -358,14 +358,14 @@ double srsran_ra_nr_R_from_mcs(srsran_mcs_table_t mcs_table,
srsran_rnti_type_t rnti_type,
uint32_t mcs_idx)
{
ra_nr_table_t table = ra_nr_select_table(mcs_table, dci_format, search_space_type, rnti_type);
ra_nr_table_idx_t table = ra_nr_select_table(mcs_table, dci_format, search_space_type, rnti_type);
switch (table) {
case ra_nr_table_1:
case ra_nr_table_idx_1:
return srsran_ra_nr_R_from_mcs_table1(mcs_idx) / 1024.0;
case ra_nr_table_2:
case ra_nr_table_idx_2:
return srsran_ra_nr_R_from_mcs_table2(mcs_idx) / 1024.0;
case ra_nr_table_3:
case ra_nr_table_idx_3:
return srsran_ra_nr_R_from_mcs_table3(mcs_idx) / 1024.0;
default:
ERROR("Invalid table %d", table);
@ -380,14 +380,14 @@ srsran_mod_t srsran_ra_nr_mod_from_mcs(srsran_mcs_table_t mcs_table,
srsran_rnti_type_t rnti_type,
uint32_t mcs_idx)
{
ra_nr_table_t table = ra_nr_select_table(mcs_table, dci_format, search_space_type, rnti_type);
ra_nr_table_idx_t table = ra_nr_select_table(mcs_table, dci_format, search_space_type, rnti_type);
switch (table) {
case ra_nr_table_1:
case ra_nr_table_idx_1:
return srsran_ra_nr_modulation_from_mcs_table1(mcs_idx);
case ra_nr_table_2:
case ra_nr_table_idx_2:
return srsran_ra_nr_modulation_from_mcs_table2(mcs_idx);
case ra_nr_table_3:
case ra_nr_table_idx_3:
return srsran_ra_nr_modulation_from_mcs_table3(mcs_idx);
default:
ERROR("Invalid table %d", table);
@ -1186,7 +1186,7 @@ int srsran_ra_nr_cqi_to_mcs(uint8_t cqi,
return -1;
}
ra_nr_table_t mcs_table_idx = ra_nr_select_table_pdsch(mcs_table, dci_format, search_space_type, rnti_type);
ra_nr_table_idx_t mcs_table_idx = ra_nr_select_table_pdsch(mcs_table, dci_format, search_space_type, rnti_type);
return ra_nr_cqi_to_mcs_table[cqi_table_idx][mcs_table_idx][cqi];
}
@ -1243,21 +1243,21 @@ int srsran_ra_nr_se_to_mcs(double se_target,
srsran_rnti_type_t rnti_type)
{
// Get MCS table index to be used
ra_nr_table_t mcs_table_idx = ra_nr_select_table_pdsch(mcs_table, dci_format, search_space_type, rnti_type);
ra_nr_table_idx_t mcs_table_idx = ra_nr_select_table_pdsch(mcs_table, dci_format, search_space_type, rnti_type);
// Get MCS table and size based on mcs_table_idx
const mcs_entry_t* mcs_se_table;
size_t mcs_table_size;
switch (mcs_table_idx) {
case ra_nr_table_1:
case ra_nr_table_idx_1:
mcs_se_table = ra_nr_table1;
mcs_table_size = RA_NR_MCS_SIZE_TABLE1;
break;
case ra_nr_table_2:
case ra_nr_table_idx_2:
mcs_se_table = ra_nr_table2;
mcs_table_size = RA_NR_MCS_SIZE_TABLE2;
break;
case ra_nr_table_3:
case ra_nr_table_idx_3:
mcs_se_table = ra_nr_table3;
mcs_table_size = RA_NR_MCS_SIZE_TABLE3;
break;
@ -1276,7 +1276,7 @@ int srsran_ra_nr_se_to_mcs(double se_target,
}
// handle monotonicity oddity between MCS 16 and 17 for MCS table 1
if (mcs_table_idx == ra_nr_table_1) {
if (mcs_table_idx == ra_nr_table_idx_1) {
if (se_target == mcs_se_table[17].S) {
return 17;
} else if (se_target <= mcs_se_table[16].S && se_target > mcs_se_table[17].S) {
@ -1303,7 +1303,7 @@ int srsran_ra_nr_se_to_mcs(double se_target,
else if (se_target < mcs_se_table[mid_point].S) {
ub = mid_point;
// handle monotonicity oddity between MCS 16 and 17 for MCS table 1
if (mcs_table_idx == ra_nr_table_1 && ub == 17) {
if (mcs_table_idx == ra_nr_table_idx_1 && ub == 17) {
ub = 16;
}
}
@ -1311,7 +1311,7 @@ int srsran_ra_nr_se_to_mcs(double se_target,
else { /* se_target > mcs_se_table[mid_point].S ) */
lb = mid_point;
// handle monotonicity oddity between MCS 16 and 17 for MCS table 1
if (mcs_table_idx == ra_nr_table_1 && lb == 16) {
if (mcs_table_idx == ra_nr_table_idx_1 && lb == 16) {
lb = 17;
}
}

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